Ball bearing cages. Standard range

Transcription

1 Ball bearing cages Standard range Publication WLK 100 E 09/2004

2 Index Page Ball bearing cages 2 Description of product 3 Advantages Shapes, assembly, operation, technology 4 Material Properties 5 Additions Coefficient of friction, coefficient of wear 6 PA 12 Material data 7 Resistance Temperature, vacuum, argon gas etc. 8 Cage end play Table of dimensions 9 Special products Distance pieces, ball cages, cage tapes 10 Examples Possibilities of using cage types Ball cage (Table of dimensions) 13 Series KKLK Filled with balls 15 Series KK 100 Cage strip with guide and holder 17 Series KK 101 Cage strip opened as snap-on cage 19 Series KK 102 Cage strip without ball holder 20 Series KK 107 Cage strip with guide and holder 21 Series KKVK 101 Compound ball cage 22 Series KKAK Axial ball cage strip 23 Series KKAK... A Axial ball cage 24 Series KKAK... R Radial ball cage 25 Series KKAK... S Skew ball cage Needle roller cage (Table of dimensions) 27 Series KKRK (KKBF) Needle roller cage strip Roller cage (Table of dimensions) 28 Series KKRR 207 Radial roller cage strip 29 Series KK 202 Radial / cross roller cage strip 30 Series KKXR Cross roller cage strip 31 Series KVSR Skew roller cage 32 Series AXK Axial rollers 33 Series KKBF Radial rollers 34 Survey of publications This booklet was prepared with the greatest care and all the data were checked for correctness. However, we cannot be liable for any wrong or incomplete data. For reasons of constant further development, we must reserve the right to modify our products. 1

3 Ball bearing cages Description of product Plastic cage strip for roller bearings of any length and diameter? In nearly all shapes, for roller or ball bearings? Also for straight stretches or similar applications? Plastic cage strips in metre lengths for roller bearings As soon as he is concerned with the development and manufacture of ball bearings or linear guides, every technician, designer, calculator or buyer is confronted by these questions. For these professions, the ball or roller cage strip is often a design or procurement problem. There are high equipment costs and mechanical costs for individual parts, considerable tooling costs, which have to be passed on to the customer for prototypes, quality problems of mechanical manufacture, problems of accuracy of repetition for pre-series and mass production series. These unpleasant problems also trouble other departments, eg: work preparation, quality assurance or assembly, so that a mechanically produced cage strip can cause a considerable part of delays in delivery. The aim of KMF`s development is therefore that our product the plastic cage strip in metre lengths, should use all the technical and economic advantages of the plastic extrusion process. With the newly developed manufacturing process, using this sophisticated technique, KMF are able to supply a roller bearing accessory without problems, which meets the individual ideas and the high demands of the customers. This publication is intended to make the selection and purpose of our products clear and to give your design department detailed data on them. 2

4 Ball bearing cages Advantages Shapes KMF cage strips in metre lengths can be used for ball or roller tracks for every diameter. Due to a specially selected profile, where the ring sliding area is made stronger and the ball area more labile, they can be bent to small running circle diameters. This advantage is supported by thin places in the sliding area of the cage strip, which are deliberately arranged between the socalled ball windows, to prevent jamming of the balls or rollers. Can be used for nearly every running circle diameter, due to the shape Summary of other advantages Assembly No more small parts Cage strips with ball or roller holders can be inserted and assembled with the balls in the ball bearings Ball or roller cage strips can be used for nearly all diameter ranges, due to the shape Operation Exact determination of cage end play for different expansion due to temperature difference Suitable for high circumferential speeds with ball guides KMF cage strips with ball or roller guides provide quiet and even running Better sliding Technique The selection of standard cages for ball tracks provides many variations with different ball sizes, but only one cage dimension. Very good surface quality due to the extrusion process. 3

5 Ball bearing cages Material Apart from precision, the main feature in the development of the KMF cage strips was to find suitable material, which, due to various additives, fulfils and even improves important operational qualities. A thermoplastic material is preferably used as the material for KMF cage strips. The polyamide extruded PA 12 is a polycondensation product of Laurinlactams. Starting from natural petroleum, it is produced according to the following scheme: Laurinlactams Natural petroleum Butane Butadene Cycledodecatrien Cyclododecanon Laurinlactam Polyamide. Polyamide PA 12 with the lowest water absorption, with a density of 1,01 is one of the lightest commercially available polyamides. This material offers the most favourable properties for cage strips. Can be coloured according to the customer`s requests Important properties Great strength together with great toughness Excellent wear and sliding properties Chemical resistance, eg: against petrol, grease and oil Excellent behaviour at low temperatures Good dimensional stability Low water absorption Due to these properties, polyamide PA 12 meets many requirements made of roller or ball cage strips for ball bearings. 4

6 Ball bearing cages Additions With regard to resistance to wear, polyamides are superior to other plastics in steel / plastic or aluminium / plastic pairings. The higher the crystallinity and therefore the surface hardness, the lower is the wear. Wear also depends on the speed of sliding, lubrication and surface quality of the bearing rings (sliding surfaces). By adding lubricants, eg: graphite or MoS 2, the wear or the coefficient of sliding friction can be reduced, see the following table. Material Coefficient of wear K x Natural polyamide ,35 Coefficient of sliding friction Polyamide with graphite ,10 0,20 Polyamide with MoS ,10 0,15 Ball cage strip type KK 101 (snap cage) natural polyamide (left) and with MoS 2 added (right) For this reason, KMF also offer roller or ball cage strips with added MoS 2. Due to the manufacturing process, the superimposed spraying of individual cage segments, there are stresses in the cage strip. These stresses are removed or at least reduced by tempering. Tempering is done in hot air. The cage strip is then conditioned in warm water. The general thermal, electrical and mechanical properties of the cage strip material used by KMF are shown in the following data sheet. All the test data are measured on test samples, which were stored for two weeks in a standard climate (23 C / 50% relative humidity). 5

7 Ball bearing cages Extruded polyamide (PA 12) Melting temperature DSC max. C dry 178 Crude density DIN kg/dm³ dry Water absorption 23 / 50% DIN % in water 23 C DIN % Linear shrinkage % Retention of shape ISO N/mm² (B) DIN C after storage 1.82 N/mm² (A) C 5 hours Vicat softening temp N (A) DIN C dry N (B) C dry 135 Linear thermal coeff. of expansion DIN K -1 dry Max. temp. of use, continuous C Short term C Specific resistance DIN Ω cm dry conditioned Voltage strength DIN kv/mm dry conditioned 38 Creep current strength KC DIN V dry conditioned > 600 Yield stress DIN N/mm² N/mm² Extension at yield stress DIN % % Tearing strength DIN N/mm² N/mm² Extension at tearing DIN % % Elastic modulus in tension DIN N/mm² N/mm² 3,5% bending stress DIN N/mm² N/mm² 150 dry conditioned 40 dry conditioned 8 dry conditioned 60 dry conditioned 275 dry conditioned 1100 dry conditioned 35 Shore hardness D DIN dry conditioned 67 Impact toughness at 40 C DIN kj/m² kj/m² Impact toughness DIN kj/m² kj/m² Charpy notch toughness (Charpy) DIN kj/m² kj/m² Charpy notch toughness (Charpy) at 40 C DIN kj/m² kj/m² dry conditioned -- dry conditioned -- dry conditioned 10 dry conditioned 6 6

8 Ball bearing cages Resistance to Temperature Ball and linear bearing manufacturers who use our plastic cage strips have determined the suitability of the material by internal investigations, according to the cage shape, and have included them in their catalogues. For the material PA 12 for continuous operation, a temperature of 90 to 100 C and for short term use, a permitted temperature of 100 to 120 C has been found. For glass fibre reinforced PA 12 (30% GF), this rises to 100 to 110 C for continuous operation and 120 to 130 C for short term use. By short term use one means hours for the material PA 12 and hours for the material PA 12GF. The actual heat resistance of the material to the appearance of embrittlement is considerably higher. The temperature limits of the standard ball bearing cages in continuous operation are 40 C and C, and for short term operation up to Vacuum On using our cages in a vacuum, one can say that in a vacuum, low molecular parts can evaporate. According to experts, the part of these compounds is very small and it has no effect on the mechanical properties of the cage material. Argon (rare gas) From various material tests, the material is 100% resistant to argon. Halogen gases Halogen gases can be based on bromine or chlorine. As the hologen gases are very corrosive, the materials PA 12 and PA 12GF are unsuitable for use exposed to them. Halogen gases cause dimensional changes and reduction in mechanical strength. 7

9 Ball bearing cages Cage end play Due to different expansions of plastic cage strips and the surrounding bearing rings made of steel or aluminium, the cage strips must be fitted with suitable end play. For cage shape surrounding ball bearings, we recommend the following at temperature differences of: t = 50 C and t = 30 C the following end play of the cage strips: Running circle Ø DL Steel bearing rings min. end play Aluminium bearing rings min. end play [mm] t = 50 C t = 30 C t = 50 C t = 30 C up to 200 3,5 2,1 3,1 1,9 up to 300 5,2 3,1 4,7 2,8 up to 400 6,9 4,1 6,2 3,7 up to 500 8,6 5,2 7,8 4,7 up to ,4 6,2 9,3 5,6 up to ,1 7,3 10,9 6,5 up to ,8 8,3 12,4 7,5 up to ,5 9,3 14,0 8,4 up to ,3 10,4 15,5 9,3 up to ,0 11,4 17,1 10,3 up to ,7 12,4 18,6 11,2 up to ,5 13,5 20,2 12,1 up to ,2 14,5 21,8 13,1 up to ,9 15,5 23,3 14,0 up to ,6 16,6 24,9 14,9 up to ,4 17,6 26,4 15,9 up to ,1 18,6 28,0 16,8 up to ,8 19,7 29,5 17,7 up to ,5 20,7 31,1 18,7 8

10 Ball bearing cages Special products Distance pieces A series of ball and cross roller distance pieces for different bearing shapes are contained in the standard range. Ball bearing cages for standard series Cages in different materials are contained in the standard range for different standard series, eg: ball cages for grooved ball bearings (6000 series) or axial roller bearings. Special cage strips Special cage strips for different shapes are produced together with the customers and are, of course, protected. These articles are not contained in the standard range. Distance pieces, ball bearing cages for standard series and special cage strips on request. 9

11 Ball bearing cages Possibilities of use Examples Four point ball bearing Shape : with 2 bearing rings Shape of cage : KK 101 KK 102 (2 bearing rings and filler) Shape : with 3 bearing rings Shape of cage : KK 100, KK 101,KK 102, KK 107, KKVK, KKAK...R Wire four point ball bearing Shape : with 2 bearing rings Shape of cage : KK 101 Shape : with 3 bearing rings Shape of cage : KK 100, KK 101, KK 102, KK 107, KKVK, KKAK...R Cross roller bearing Shape : with 2 bearing rings and filler Shape of cage : KK 202, KKXR Shape : with 3 bearing rings Shape of cage : KK 202, KKXR Wire cross roller bearing Shape : with 2 bearing rings and filler Shape of cage : KK 202, KKXR Shape : with 3 bearing rings Shape of cage : KK 202, KKXR 10

12 Ball bearing cages Possibilities of use Examples Radial roller bearing Shape : with 2 bearing rings Shape of cage : KK 202, KKRR, KKBF Wire radial roller bearing Shape : with 2 bearing rings Shape of cage : KK 202, KKRR, KKBF Thin ring bearing Shape Shape of cage : KK 101 : with 2 bearing rings Needle roller bearing Shape Shape of cage : KKRR, KKBF : with 2 bearing rings (radial bearing) Straight guide (linear guide) All the above shapes can be produced as straight guides, where every KMF standard cage strip can be used in metre lengths. Further information in KMF publication LLK 100 (linear bearing cages). 11

13 Ball cage KKLK Series KKLK cage strips filled with balls Ball cages of series KKLK are ball cages of series KK 100 and KK 107 with ball guides and holders, which are supplied filled with balls. The ball cage strips are offered in metre lengths or cut ready for installation. The standard balls for filled cage strips of series KKLK are made of the material 100Cr6 according to DIN 5401 / Grade 28 (class 3). Variants made of other materials, eg: corrosion-resistant steel X46Cr13 / or POM plastic and AL 2 O 3 ceramic are also possible. Possibilities of use All rotating (and linear) movements based on ball track systems, eg: - Four point ball bearings - Grooved ball bearings - Ball rotating joints - Wire ball bearing elements or complete bearings - Skew ball bearings (in certain conditions) - Rotating joints Minimum quantity - none Material - PA 12 Colouring - at the manufacturer`s choice Suffixes for balls (examples) - corrosion-resistant steel SS - plastic POM - ceramic ALO Example of order / inquiry Ball cage cut to length with 38 balls 6 mm diam. (note cage end play page 8) Designation : KKLK 060 / 38 Quantity : 200 off no. off ball pockets ball size (6 mm) series Ball cage in metre lengths, filled with 6 mm diam. balls made of corrosion-resistant steel (SS) Designation: KKLK 060 SS Quantity : 200 metres 12

14 Ball cage KKLK Series KKLK cage strips filled with balls Table of dimensions [dimensions in mm] Ball Ø D W [inch] H S T D 2) KKLK 021/... 2,000 5,0 0,75 3,0 2,1 KKLK 023/... 2,381 3/32 6,0 0,80 3,6 2,5 KKLK 031/... 3,000 7,0 1,00 4,2 3,2 KKLK S32/... 3,175 1/8 4,4 0,70 4,2 3,3 KKLK 032/... 3,175 1/8 7,0 1,00 4,2 3,2 KKLK 039/... 3,969 5/32 6,3 1,30 5,8 4,2 KKLK 040/... 4,000 6,3 1,30 5,8 4,2 KKLK 047/... 4,762 3/16 8,0 1,50 6,8 5,2 KKLK 050/... 5,000 8,0 1,50 6,8 5,2 KKLK 060/... 6,000 9,0 1,60 7,8 6,2 KKLK 063/... 6,350 1/4 9,0 1,60 7,8 6,5 KKLK 079/... 7,938 5/16 12,0 2,00 12,0 8,2 KKLK 080/... 8,000 12,0 2,00 12,0 8,2 KKLK 09C/... 9,000 11,6 2,00 11,5 9,2 KKLK 090/... 9,000 15,0 2,00 11,5 9,2 KKLK 095/... 9,525 3/8 12,6 2,50 12,0 9,7 KKLK 100/... 10,000 13,2 2,50 12,5 10,2 KKLK 110/... 11,000 13,7 2,50 14,0 11,2 KKLK 111/... 11,112 7/16 13,7 2,50 14,0 11,2 KKLK 12C/... 12,000 15,0 2,50 15,0 12,2 KKLK 127/... 12,700 1/2 22,0 3,50 16,0 13,0 KKLK 160/... 16,000 20,0 3,50 20,0 16,2 1) Other dimensions on request 2) D = Diameter of ball pocket 13

15 Ball cage KK 100 Series KK 100 with guide and holder Ball cages of series KK 100 are made with ball guides and have ball holders on the ball pockets. The ball cages are supplied in metre lengths, without balls, on transport reels. Possibilities of use All rotating (and linear) movements based on ball track systems, eg: - Four point ball bearings - Grooved ball bearings - Ball rotating joints - Wire ball bearing elements or complete bearings - Skew ball bearings (in certain conditions) - Rotating joints Minimum quantities Supplied in quantities of < 100 m with minimum quantity added price from 100 m without minimum quantity added price (alternative, series KKLK without added price) Material PA 12 Colouring At the manufacturer`s choice Example of order / inquiry: Designation : KK ,319 Quantity : 500 metres size of balls series 14

16 Ball cage KK 100 Series KK 100 with guide and holders Table of dimensions [dimensions in mm] Ball Ø D W [inch] H S T D 2) KK 100-2,000 2,000 5,0 0,75 3,0 2,1 KK 100-2,381 2,381 3/32 6,0 0,80 3,6 2,5 KK 100-3,175 3,000 7,0 1,00 4,2 3,2 KK 100-3,175 3,175 1/8 7,0 1,00 4,2 3,2 KK 100 F-08 7,938 5/16 12,0 2,00 12,0 8,2 KK 100 F-08 8,000 12,0 2,00 12,0 8,2 KK S24 7,938 5/16 14,0 2,00 24,0 8,2 KK S24 8,000 14,0 2,00 24,0 8,2 KK A 9,000 15,0 2,00 11,5 9,2 KK C 9,000 11,6 2,00 11,5 9,2 KK 100 D-9,525 9,525 3/8 12,6 2,50 12,0 9,7 KK 100 K-9,525 9,525 3/8 12,6 3,00 24,0 9,7 KK 100 D-10 10,000 13,2 2,50 12,5 10,2 KK ,319 10,319 13/32 22,0 3,50 13,0 10,5 KK C 11,000 13,7 2,50 14,0 11,2 KK C 11,112 7/16 13,7 2,50 14,0 11,2 KK C 12,000 15,0 2,50 15,0 12,2 KK ,7 12,500 22,0 3,50 16,0 13,0 KK ,7 12,700 1/2 22,0 3,50 16,0 13,0 KK ,494 13,494 17/32 22,0 3,50 17,0 14,0 KK ,494 13,500 22,0 3,50 17,0 14,0 KK ,875 5/8 20,0 3,50 20,0 16,2 KK ,000 20,0 3,50 20,0 16,2 KK ,000 28,0 4,00 21,0 17,5 KK ,462 11/16 28,0 4,00 21,0 17,5 KK C 20,000 24,2 3,50 25,0 20,2 KK ,638 20,638 13/16 31,0 4,50 25,0 21,0 KK H30 22,000 30,0 6,00 27,5 23,2 KK H30 22,225 7/8 30,0 6,00 27,5 23,2 KK H30 23,000 30,0 6,00 27,5 23,2 KK H30 23,019 29/32 30,0 6,00 27,5 23,2 1) Other dimensions on request 2) D = Diameter of ball pocket 15

17 Ball cage KK 101 Series KK 101, opened as snap cage Ball cages of series KK 101 are opened on one side and can therefore be snapped on to the corresponding ball series. The cage strips are provided with a ball cup in the ball pocket from ball diameter 9,525 upwards, but are not provided with a ball holder. The cage strip is preferably guided on the bearing edges, due to the limited ball guidance. The cage strips are supplied as metre lengths, without balls, on transport reels. Possibilities of use All rotating movements based on ball track systems, and which are mainly produced by Condrad filling, eg: - Four point ball bearings - Grooved ball bearings - Ball rotating joints - Wire ball bearing elements or complete bearings - Rotating guides Minimum quantities Supplied in quantities of < 100 m with minimum quantity added price from 100 m without minimum quantity added price Material PA 12 Colouring At the manufacturer`s choice Example of order / inquiry: Designation : KK ,7 Quantity : 500 metres 16 size of balls series

18 Ball cage KK 101 Series KK 101, opened as snap cage Table of dimensions [dimensions in mm] Ball Ø D W [inch] H A S T D 2) KK 101-3,175 3,175 1/8 5,0 3,00 1,1 6,2 3,3 KK 101-3,962 3,962 5/32 6,2 3,10 1,4 7,9 4,1 KK 101-4,762 4,762 3/16 7,7 3,85 1,7 9,5 4,9 KK ,000 7,5 3,70 1,5 10,0 5,2 KK ,000 9,0 4,50 2,0 12,0 6,2 KK 101-6,350 6,350 1/4 10,5 5,25 2,2 12,7 6,5 KK ,938 5/16 14,0 7,00 2,5 16,0 8,2 KK ,000 14,0 7,00 2,5 16,0 8,2 KK 101-9,525 9,525 3/8 16,0 9,40 3,5 19,0 9,8 KK ,319 10,319 13/32 22,0 11,00 3,5 20,0 10,5 KK ,0 12,000 18,0 9,00 4,0 24,0 12,2 KK ,7 12,700 1/2 22,0 11,00 4,5 25,0 13,0 KK ,494 13,494 17/32 22,0 11,00 4,5 27,0 14,0 KK ,494 13,500 22,0 11,00 4,5 27,0 14,0 KK ,0 16,000 28,0 14,00 5,5 32,0 16,5 KK ,0 20,000 29,0 14,50 8,0 38,5 20,2 1) Other dimensions on request 2) D = Diameter of ball pocket 17

19 Ball cage KK 102 Series KK 102, holed strip without ball holders Ball cages of series KK 102 are so-called holed strips without ball guide and ball holders. The cage strip is guided on the bearing edges. Possibilities of use All rotating movements which are based on ball track systems, and which mainly have filling holes by means of filling stoppers, eg: - Four point ball bearings - Grooved ball bearings - Surface-hardened ball rotating joints - Rotating guides Minimum quantities Supplied in quantities of < 100 m with minimum quantity extra price from 100 m without minimum quantity extra price Material PA 12 Colouring At the manufacturer`s choice Example of order / inquiry Designation : KK Quantity : 500 metres size of ball series 18

20 Ball cage KK 102 Series KK 102, holed strip without ball holders Table of dimensions [dimensions in mm] Ball Ø D W [inch] H S T D 2) KK ,319 10,000 22,0 3,5 13,0 10,5 KK ,319 10,319 13/32 22,0 3,5 13,0 10,5 KK ,906 15/32 18,0 2,5 14,0 12,2 KK ,000 18,0 2,5 14,0 12,2 KK ,7 12,500 22,0 3,5 16,0 13,0 KK ,7 12,700 1/2 22,0 3,5 16,0 13,0 KK ,000 22,0 3,5 16,0 14,4 KK ,288 9/16 22,0 3,5 16,0 14,4 KK H25 15,000 25,0 4,0 18,8 15,2 KK H25 15,081 19/32 25,0 4,0 18,8 15,2 KK ,000 28,0 4,0 21,0 17,5 KK ,669 21/32 28,0 4,0 21,0 17,5 KK ,000 28,0 4,0 21,0 17,5 KK ,000 28,0 4,0 22,5 18,5 KK ,256 23/32 28,0 4,0 22,5 18,5 KK H28 19,050 3/4 28,0 4,0 25,0 20,5 KK H28 19,844 25/32 28,0 4,0 25,0 20,5 KK H28 20,000 28,0 4,0 25,0 20,5 KK D 20,000 30,0 3,0 25,5 21,3 KK D 20,638 13/16 30,0 3,0 25,5 21,3 KK D 21,000 30,0 3,0 25,5 21,3 KK DT 20,000 30,0 3,0 51,0 21,3 KK DT 20,638 13/16 30,0 3,0 51,0 21,3 KK DT 21,000 30,0 3,0 51,0 21,3 KK H30 22,000 30,0 3,0 27,5 22,5 KK H30 22,225 7/8 30,0 3,0 27,5 22,5 KK ,4 25,000 37,5 5,0 30,6 26,0 KK ,4 25, ,5 5,0 30,6 26,0 KK ,000 42,0 6,0 36,0 30,5 KK , /16 42,0 6,0 36,0 30,5 KK , /8 45,0 8,0 45,0 37,0 KK ,000 45,0 8,0 45,0 37,0 KK ,000 45,0 8,0 45,0 37,0 1) Other dimensions on request 2) D = Diameter of ball pocket 19

21 Ball cage KK 107 Series KK 107, with guide and holders Table of dimensions [dimensions in mm] Ball Ø D W [inch] H S T D 2) KK 107-3,175 3,175 1/8 4,4 0,7 4,2 3,3 KK 107-4,0 3,969 5/32 6,3 1,3 5,8 4,2 KK 107-4,0 4,000 6,3 1,3 5,8 4,2 KK 107-5,0 4,762 3/16 8,0 1,5 6,8 5,2 KK 107-5,0 5,000 8,0 1,5 6,8 5,2 KK 107-6,0 6,000 9,0 1,6 7,8 6,2 KK 107-6,35 6,350 1/4 9,0 1,6 7,8 6,5 1) Other dimensions on request 2) D = Diameter of ball pocket Ball cages of series KK 107 are mainly designed for small ball sizes with correspondingly small diameters. The cage strips are guided and have skewed cross-arranged ball holders. This arrangement makes an optimum reduced ball part possible and causes sufficient holding with small running circle diameters. The cage strips are supplied in metre lengths, without balls, on transport reels. For cage strips filled with balls, see series KKLK. Example of order / inquiry Designation : KK 107 6,0 Quantity : 200 metres size of balls series 20

22 Ball cage KKVK 101 Series KKVK 101 compound ball cage Table of dimensions [dimensions in mm] Ball Ø D W [inch] H S T D 2) KKVK 101-6,35 6,35 1/ ,67 6,5 1) Other dimensions on request 2) D = Diameter of ball pocket Ball cages of series KKVK 101 are so-called guided compound cages. They consist of a punched metal strip (support) and extruded plastic cups (ball pockets). The support is made of corrosion-resistant steel and the ball pocket of extruded TEFLON / PTFE. These and other combinations of materials, eg. with ceramic balls make use in a high temperature range possible. Ball cages KKVK 101 can only be supplied in limited lengths. Example of order / inquiry: With reference to type KKVK, the order or inquiry should be as detailed as possible. For a tender to be made, apart from the running circle, the required combination of materials for the support, balls and plastic cups is required. 21

23 Ball cage KKAK Series KKAK axial ball cage strip Table of dimensions [dimensions in mm] Ball Ø D W [inch] H S T D 2) KKAK , ,1 1) Other dimensions on request 2) D = Diameter of ball pocket Ball cages of series KKAK are guided axial ball cage strips specially designed for axial pressure bearings. The cage strips are supplied not filled, in metre lengths or cut, or ready to install filled with balls. Example of order / inquiry: Designation : KKAK Quantity : 500 metres Cage strip not filled Designation : KKAK-06 / 20 Quantity : 100 off Cage strip ready to install Equipped with 20 off 6 mm diameter balls 22

24 Ball cage KKAK... A Series KKAK axial ball cages Table of dimensions [dimensions in mm] Ball Ø D W [inch] H S T 2) Running circle Ø D L KKAK 6... A 6, ,0 9,0 > 100 KKAK 9, A 9,525 3/8 20 3,5 20,0 > 150 KKAK A 11, ,0 14,5 > 200 KKAK 11, A 11,906 15/ ,0 15,5 > 200 KKAK A 12, ,0 15,5 > 200 KKAK A 14, ,0 17,0 > 200 1) Other dimensions on request 2) Ball spacing (division) Ball cages of series KKAK... A are guided axial ball cages specially designed for axial pressure bearings. The cages are so-called combination cages and consist of butt-welded precision steel rings (supports) and snap-on cage strips. They are manufactured ready to install in the appropriate running circle diameter and may be filled with balls or offered and supplied without balls. Due to the ideal shape, they can easily be made as segment cages, eg: for divided ball bearings or arcs with limited area. Example of order: Designation : KKAK 9, A Quantity : 200 off axially arranged running circle Ø D L size of balls series 23

25 Ball cage KKAK... R Series KKAK radial ball cages Table of dimensions [dimensions in mm] Ball Ø D W [inch] H S T 2) Running circle Ø D L KKAK 6... R 6, ,0 9,0 > 50 KKAK 9, R 9,525 3/8 20 3,5 20,0 > 200 KKAK R 11, ,0 14,5 > 100 KKAK 11, R 11,906 15/ ,0 15,5 > 100 KKAK R 12, ,0 15,5 > 100 KKAK R 14, ,0 17,0 > 100 1) Other dimensions on request 2) Ball spacing (division) Ball cages of series KKAK... R are guided ball cages specially designed for ball bearings and ball bearing elements. The cages are so-called combination cages and consist of butt-welded precision steel rings (supports) and radial snap-on cage strips. They are manufactured ready to fit on the appropriate running circle Ø D L and can be filled with balls or offered and supplied without balls. Due to the ideal shape, they can easily be made as segment cages, eg: for divided ball bearings or arcs with limited area. Example of order: Designation : KKAK R Quantity : 50 off radially arranged running circle Ø D L size of balls series 24

26 Ball cage KKAK... S Series KKAK skew ball cages Table of dimensions [dimensions in mm] Ball Ø D W [inch] A B T 2) Running circle Ø D L KKAK S 11, ,5 > 150 KKAK 11, S 11,906 15/ ,5 > 150 KKAK S 12, ,5 > 150 KKAK S 14, ,0 > 150 1) Other dimensions on request 2) Ball spacing (division) Ball cages of series KKAK... S are guided ball cages specially designed for skew ball bearings and skew ball bearing elements, preferably with a pressure angle of 45. The cages are so-called combination cages and consist of butt-welded precision steel rings (supports) and the skewed snap-on cage strips, matching the pressure angle. They are manufactured ready to install to the required running circle diameter and may be filled with balls or offered and supplied without balls. Example of order: Designation : KKAK S Quantity : 50 off skew arrangement running circle Ø D L size of balls series 25

27 Radial needle roller set KKRK (KKBF) Series KKRK 200 needle roller cage strip Radial needle roller sets of series KKRK (KKBF) are single row held plastic cage strips for needle rollers. The cage strips are offered and supplied in metre lengths without needle rollers with KMF type designation KKRK 200 and with needle rollers with KMF type designation KKBF... Minimum quantities For KMF type KKRK 200 from 100 m without minimum quantity extra price. For quantities < 100 m with minimum quantity extra price. Needle rollers of type KKBF (incl. needle rollers NRB / G2) no minimum quantity charge. Examples of orders / inquiries: Needle roller cage strip for own filling and cutting to length Designation : KKRK Quantity : 500 metres needle roller size series (without needle rollers) Needle roller set for cutting to length Designation : KKBF 3020 Quantity : 100 metres cage size series (incl. needle rollers) Needle roller set ready to install Designation : KKBF Quantity : 50 off ready to install for length (note cage end play page 8) cage size series 26

28 Radial needle roller set KKRK (KKBF) Series KKRK 200 needle roller cage strip Table of dimensions [dimensions in mm] without needle KMF-type 2) with needle Needle roller Ø D W x L W H S T No. of needle per metre KKRK KKBF ) 1,5 x 7,8 10 1,1 2,9 344 KKRK KKBF ,5 x 13,8 18 2,0 4,8 208 KKRK KKBF ,0 x 15,8 20 2,5 5,2 192 KKRK KKBF ,0 x 23,8 30 3,0 7,0 142 KKRK B KKBF ,0 x 15,0 23 3,5 8,0 125 KKRK KKBF ,0 x 27,8 35 3,5 9,0 111 KKRK KKBF ,0 x 30,0 40 5,0 16,0 62 1) Other dimensions on request 2) Further information, eg: numbers, installation, installed diameter etc. of filled radial needle roller sets of series KKBF can be seen in KMF publication UFT (see survey of publications page 34). 3) The radial needle roller set KKBF 1510 was originally designed for sensitive balancing systems and has a reduced ball holder. It is therefore recommended that ready to install needle roller sets, not metre lengths, should be discussed with the manufacturer. 27

29 Radial roller cage KKRR Series KKRR 207 radial roller cage strip Table of dimensions [dimensions in mm] without rollers KMF-type with rollers Cylinder roller Ø D W x L W H S T L No. of Cyl.-rollers per metre KKRR KKRR x 5,0 10 2,5 7,5 5,2 133 KKRR KKRR x 10,0 16 2,5 13,0 10,2 76 KKRR KKRR x 9,8 16 2,5 13,0 10,2 76 KKRR KKRR x 16,0 18 4,0 22,0 16,2 45 KKRR KKRR x 15,8 28 4,0 22,0 16,2 45 1) Other dimensions on request Radial roller cages of series KKRR are single row guided plastic cage strips for cylindrical rollers. The cage strips are offered and supplied in metre lengths without cylindrical rollers as KMF type KKRR 207 and the rollers are supplied as KMF type KKRR.... Examples of order / inquiry: Radial roller cage strip for own filling and cutting to length Designation : KKRR Quantity : 100 metres Radial roller cage for own cutting to length Designation : KKRR 1010 Quantity : 100 metres Radial roller cage ready to install cage strip with rollers 10 x 10 series Designation : KKRR Quantity : 50 off ready to install cut to correct length (note cage end play, page 8) 28

30 Roller cage KK 202 Series KK 202 radial roller / cross roller cage strip Table of dimensions [dimensions in mm] Cross roller Ø D W x L W H S T L KK H x 9,8 22 2,5 12,3 14,0 KK x 7,9 20 3,9 12,3 12,3 Radial roller Ø D W x L W H S T L KK H x 13,5 22 2,5 12,3 14,0 KK x 12,0 20 3,9 12,3 12,3 1) Other dimensions on request Roller cages of series KK 202 are so-called hole strips without roller guides and roller holders. The cage strip is guided on the bearing edges. It can be used for track systems with cross rollers and with radial rollers. Cross roller Radial roller Example of order / inquiry Designation : KK H 22 Quantity : 100 metres 29

31 Roller cage KKXR Series KKXR cross roller cage strip Table of dimensions [dimensions in mm] Cross roller Ø D W H S T KKXR ,0 7,5 KKXR ,0 12,5 KKXR ,0 17,5 KKXR ,0 20,0 KKXR ,0 25,0 KKXR ,5 32,0 1) Other dimensions on request Roller cages of series KKXR are cage strips for track systems with cross rollers. One of the advantages of these seperator strips would be that compared with distance pieces the time consuming endplay setting by using balance distance pieces is no longer required. The roller pockets have a one-sided guide without roller holders. The cage strip is preferably filled via filling holes in the track system, but is suitable for bearings with split bearing rings, too. The guide is arranged for the bearing ring without filling stopper. Therefore two winding directions (winding direction A / B) are offered, which must be noted in the order. Example of order / inquiry: KKXR A- 100 metres Designation Winding direction Quantity Winding direction -A- Winding direction -B- 30

32 Roller cage KVSR Series KVSR skew roller cage Table of dimensions [dimensions in mm] Cylindrical rollers H x H Area of use Running circle Ø D L D W L W Ø D L min. Ø D L max. KVSR x ~ ) Other dimensions on request Skew roller cages of series KVSR are combination cages. Stable precision steel wire rings (so-called supports) are completed with a plastic roller cage strip into a skew roller cage with a preferred pressure angle of 45. By the combination principle, all pressure angles from 0 (axial roller set) to 90 (radial roller set) can be produced. The supports are manufactured exactly to the diameter as a closed ring. The cylindrical rollers are held and guided in the roller pockets. Example of order / inquiry: State manufactured by the manufacturer ready to install on running circle diameter (Ø D L ). KVSR mm 15 off Designation Running circle Ø D L Quantity 31

33 Roller cage AXK Series AXK axial roller sets Table of dimensions [dimensions in mm] Are of use Cylindrical rollers Shaft diameter D W L W d min. d max. H T 2) AXK ~ ,5 AXK ~ ,0 AXK ~ ,0 AXK ~ ,0 AXK ~ ,0 1) Other dimensions on request 2) Roller spacing (division) Axial roller sets of series AXK are combination cages. Stable precision steel wire rings (so-called supports) are completed by a plastic roller cage strip into an axial roller set with a pressure angle of 0. By the combination principle, other pressure angels, eg: 30 or 45 (skew roller cages) can be produced. The supports are manufactured exactly to the diameter as a closed ring. The cylindrical rollers are held and guided in the roller pockets. Further information on the preferred series with numbers, installation, diameter etc. for series AXK is contained in KMF publication UFT (see survey of publications on page 34). Example of order / inquiry: AXK off Designation Area of use Quantity Shaft diameter (mm) 32

34 Roller cage KKBF Series KKBF radial roller sets Table of dimensions [dimensions in mm] Area of use Cylindrical roller Running circle diameter D W L W D L min. D L max. H T 2) KKBF ~ ,5 KKBF ~ ,0 KKBF ~ ,0 KKBF ~ ,0 KKBF ~ ,0 1) Other dimensions on request 2) Roller spacing (division) Radial roller sets of series KKBF are combination cages. Stable precision steel wire rings (so-called supports) are completed by a plastic roller cage strip into a roller set with a pressure angle of 90. The supports are manufactured exactly to the running circle diameter (D L ) as a closed ring. The supports may be provided with an impact position, so that the radial roller set can also be mounted in a sunken running track. The types KKBF 4015, 5015 and 7025 are eminently suitable for producing mulit-row radial roller sets. Further information on the preferred-series with numbers, installation, diameter etc. of series KKBF or a mulit-row version is contained in KMF publication UFT (see survey op publications on page 34). Example of order / inquiry: KKBF off Designation Running circle Ø D L (mm) Quantity 33